2148     PHINode *PH = dyn_cast<PHINode>(ShadowUse->getOperand(0));  in OptimizeShadowIV()  local
2149     if (!PH) continue;  in OptimizeShadowIV()
2150     if (PH->getNumIncomingValues() != 2) continue;  in OptimizeShadowIV()
2155     const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(SE.getSCEV(PH));  in OptimizeShadowIV()
2160     Type *SrcTy = PH->getType();  in OptimizeShadowIV()
2167     if (PH->getIncomingBlock(0) == L->getLoopPreheader()) {  in OptimizeShadowIV()
2175     ConstantInt *Init = dyn_cast<ConstantInt>(PH->getIncomingValue(Entry));  in OptimizeShadowIV()
2182       dyn_cast<BinaryOperator>(PH->getIncomingValue(Latch));  in OptimizeShadowIV()
2190     if (Incr->getOperand(0) == PH)  in OptimizeShadowIV()
2192     else if (Incr->getOperand(1) == PH)  in OptimizeShadowIV()
2204     PHINode *NewPH = PHINode::Create(DestTy, 2, "IV.S.", PH);  in OptimizeShadowIV()
2213     NewPH->addIncoming(NewInit, PH->getIncomingBlock(Entry));  in OptimizeShadowIV()
2214     NewPH->addIncoming(NewIncr, PH->getIncomingBlock(Latch));  in OptimizeShadowIV()